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Renato J. Cintra
Researcher at Federal University of Pernambuco
Publications - 157
Citations - 2739
Renato J. Cintra is an academic researcher from Federal University of Pernambuco. The author has contributed to research in topics: Discrete cosine transform & Image compression. The author has an hindex of 25, co-authored 150 publications receiving 2284 citations. Previous affiliations of Renato J. Cintra include University of Akron & University of Lyon.
Papers
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Proceedings ArticleDOI
An Offset-Canceling Approximate-DFT Beamforming Architecture for Wireless Transceivers
TL;DR: In this article, a low-complexity approximate DFT (a-DFT) was proposed for 5G wireless applications based on dynamic current mirrors to cancel errors in the current copying and scaling operations required to realize DFT matrices.
Journal ArticleDOI
Parametric and Nonparametric Tests for Speckled Imagery
TL;DR: In this article, the authors proposed several divergence measures specifically tailored for G0 distributed data, and devised and assessed tests based on such measures, and their performances were quantified according to their test sizes and powers.
Proceedings ArticleDOI
Design of a low-complexity wideband analog true-time-delay 5-beam array in 65nm CMOS
Arjuna Madanayake,Viduneth Ariyarathna,Nilan Udayanga,Leonid Belostotski,Sirani K M. Perera,Renato J. Cintra +5 more
TL;DR: It is shown that the proposed approach saves 36 TTD elements in a 5-beam multi-beamformer giving rise to a 60% reduction of hardware in the design compared to the direct implementation.
Posted Content
Multilayer hadamard decomposition of discrete hartley transforms
TL;DR: Some fast algorithms are derived which meet the lower bound on the multiplicative complexity of a DFT/DHT based on a decomposition of the DHT into layers of Hadamard-Walsh transforms.
Journal ArticleDOI
Towards a Low-SWaP 1024-Beam Digital Array: A 32-Beam Subsystem at 5.8 GHz
Arjuna Madanayake,Soumyajit Mandal,Theodore S. Rappaport,Viduneth Ariyarathna,Suresh Madishetty,Sravan Pulipati,Renato J. Cintra,Diego F. G. Coelho,Raiza Oliviera,Fábio M. Bayer,Leonid Belostotski +10 more
TL;DR: This article describes the proposed 32-point DFT approximation targeting 1024 beams using a 2-D array and shows the multiplierless approximation and its mapping to a 32-beam subsystem consisting of 5.8 GHz antennas that can be used for generating 1024 digital beams without multiplications.